$ git clone -n https://src.fedoraproject.org/rpms/kmailtransport.git /var/lib/mock/f42-build-side-1-3503813-45982/root/chroot_tmpdir/scmroot/kmailtransport
Cloning into '/var/lib/mock/f42-build-side-1-3503813-45982/root/chroot_tmpdir/scmroot/kmailtransport'...
$ git fetch origin 3b462564570817e9063b66b25ca1dae1012f35ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmailtransport
 * [new ref]         3b462564570817e9063b66b25ca1dae1012f35ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b46256 25.04.0